Roof-rock contamination of Taylor Creek Rhyolite, New Mexico, as recorded in hornblende phenocrysts and biotite xenocrysts

The Taylor Creek rhyolite, a group of coeval, mid-Tertiary, silica-rich rhyolite lava domes in SW New Mexico, is notable for recording bulk-rock evidence of minor, yet easily measurable, contamination of its source magma reservoir resulting from assimilation of Proterozoic roof rock.

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Bibliographische Detailangaben
Veröffentlicht in:	The American mineralogist 1996-01, Vol.81 (1-2), p.135-140
Hauptverfasser:	Wittke, James H, Duffield, Wendell A, Jones, Caron
Format:	Artikel
Sprache:	eng
Schlagworte:	alkaline earth metals amphibole group biotite Cenozoic chain silicates clinoamphibole Creeks Crystals electron probe data hornblende igneous and metamorphic rocks igneous rocks isotope ratios isotopes Magnesium Manganese metals mica group middle Tertiary mineral composition Minerals New Mexico Oligocene Paleogene Petrology phenocrysts rhyolites Rocks sheet silicates silicates southwestern New Mexico Sr-87/Sr-86 stable isotopes strontium Taylor Creek Rhyolite Tertiary United States volcanic rocks xenocrysts
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Beschreibung
Zusammenfassung:	The Taylor Creek rhyolite, a group of coeval, mid-Tertiary, silica-rich rhyolite lava domes in SW New Mexico, is notable for recording bulk-rock evidence of minor, yet easily measurable, contamination of its source magma reservoir resulting from assimilation of Proterozoic roof rock.
ISSN:	0003-004X 1945-3027
DOI:	10.2138/am-1996-1-217